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HID: samples/hidraw: make it possible to select device

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Makefile that can actually build the example, and allow selecting device to
work on.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Pavel Machek 2015-03-14 21:57:22 +01:00 committed by Jiri Kosina
parent f3dddf2432
commit 04303f8ec1
2 changed files with 7 additions and 1 deletions
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2
samples/hidraw/Makefile
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@ -8,3 +8,5 @@ hostprogs-y := hid-example
always := $(hostprogs-y)
HOSTCFLAGS_hid-example.o += -I$(objtree)/usr/include
all: hid-example

6
samples/hidraw/hid-example.c
View File

@ -46,10 +46,14 @@ int main(int argc, char **argv)
char buf[256];
struct hidraw_report_descriptor rpt_desc;
struct hidraw_devinfo info;
char *device = "/dev/hidraw0";
if (argc > 1)
device = argv[1];
/* Open the Device with non-blocking reads. In real life,
don't use a hard coded path; use libudev instead. */
fd = open("/dev/hidraw0", O_RDWR|O_NONBLOCK);
fd = open(device, O_RDWR|O_NONBLOCK);
if (fd < 0) {
perror("Unable to open device");